20454684100

素因数分解:

$2^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{853}}^1\times {\mathrm{6481}}^1$

素因数の和:7385

約数の個数: 72

約数和(自身を含む): 45646788488

約数和(自身を除く): 25192104388

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 148, 185, 370, 740, 853, 925, 1706, 1850, 3412, 3700, 4265, 6481, 8530, 12962, 17060, 21325, 25924, 31561, 32405, 42650, 63122, 64810, 85300, 126244, 129620, 157805, 162025, 239797, 315610, 324050, 479594, 631220, 648100, 789025, 959188, 1198985, 1578050, 2397970, 3156100, 4795940, 5528293, 5994925, 11056586, 11989850, 22113172, 23979700, 27641465, 55282930, 110565860, 138207325, 204546841, 276414650, 409093682, 552829300, 818187364, 1022734205, 2045468410, 4090936820, 5113671025, 10227342050, 20454684100]

約数ペア:

[(1, 20454684100), (2, 10227342050), (4, 5113671025), (5, 4090936820), (10, 2045468410), (20, 1022734205), (25, 818187364), (37, 552829300), (50, 409093682), (74, 276414650), (100, 204546841), (148, 138207325), (185, 110565860), (370, 55282930), (740, 27641465), (853, 23979700), (925, 22113172), (1706, 11989850), (1850, 11056586), (3412, 5994925), (3700, 5528293), (4265, 4795940), (6481, 3156100), (8530, 2397970), (12962, 1578050), (17060, 1198985), (21325, 959188), (25924, 789025), (31561, 648100), (32405, 631220), (42650, 479594), (63122, 324050), (64810, 315610), (85300, 239797), (126244, 162025), (129620, 157805)]